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African Easterly Waves and Cyclonic Activity over the Eastern Atlantic : Composite and Case Studies
Joint Authors
Gaye, Amadou
Diedhiou, Arona
Camara, Moctar
Source
International Journal of Geophysics
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-10-31
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This study aims to understand the main differences over the African continent and the Eastern Atlantic Ocean between African Easterly Waves (AEWs) associated with Atlantic cyclones (developing AEWs) and non-developing AEWs.
A statistical study showed that most of the named cyclones generated near the West African coast have a long lifecycle and all are associated with intense AEWs.
Using NCEP/NCAR reanalyses, a composite study of the characteristics of developing AEWs is carried out and compared to those of non-developing AEWs.
Developing AEWs exhibit the greatest baroclinic and barotropic conversions which are known to be the main processes involved in AEWs growth suggesting that these AEWs are stronger than the non-developing ones.
Moreover, the developing AEWs are characterized by the existence of a relatively more unstable environment over West Africa and the Atlantic Ocean.
A case study using rawinsonde data showed that the developing AEW is associated with dynamic and thermodynamic conditions conducive for deep convection and subsequent cyclogenesis compared to the non-developing AEW case.
American Psychological Association (APA)
Camara, Moctar& Diedhiou, Arona& Gaye, Amadou. 2011. African Easterly Waves and Cyclonic Activity over the Eastern Atlantic : Composite and Case Studies. International Journal of Geophysics،Vol. 2011, no. 2011, pp.1-14.
https://search.emarefa.net/detail/BIM-505279
Modern Language Association (MLA)
Camara, Moctar…[et al.]. African Easterly Waves and Cyclonic Activity over the Eastern Atlantic : Composite and Case Studies. International Journal of Geophysics No. 2011 (2011), pp.1-14.
https://search.emarefa.net/detail/BIM-505279
American Medical Association (AMA)
Camara, Moctar& Diedhiou, Arona& Gaye, Amadou. African Easterly Waves and Cyclonic Activity over the Eastern Atlantic : Composite and Case Studies. International Journal of Geophysics. 2011. Vol. 2011, no. 2011, pp.1-14.
https://search.emarefa.net/detail/BIM-505279
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-505279